Fluke 96000 Series Service Manual page 96

96000 Series
Service Manual
13. Repeat steps 6 through 12 for the next test frequency at +7 dBm listed in
14. Reconnect the directional bridge test port to the UUT and set it to OPER.
15. Set the Spectrum Analyzer display to linear. Set the sweep time to 5 ms,
16. Set the UUT frequency to 500 MHz, set the signal generator frequency to
17. Initiate a single sweep. Allow the sweep to complete then perform a
18. Perform a (minimum) search and note the marker amplitude.
19. Calculate the difference of the maximum and minimum searches, dividing the
20. Compute the voltage reflection coefficient using the following formula:
21. Using the following formula, calculate the UUT VSWR. The calculated value
22. Repeat steps 16 through 21 for the remaining test frequencies and maximum
23. Repeat steps 4 through 22 for the remaining UUT output levels and maximum
24. Set the UUT to STBY.
3-54
Table 3-23, setting the Spectrum Analyzer center frequency to the test
frequency and recording Z
single sweep.
500.00001 MHz, and set the Spectrum Analyzer center frequency to 500
MHz.
(maximum) peak search. Note the marker amplitude.
difference by 2 to determine the peak value. Record this number as Z
must be <1.1.
VSWR values in Table 3-23, setting the Spectrum Analyzer center frequency
in step 15 to the test frequency.
VSWR values in Table 3-23.
for each test frequency.
Max
Z
ρ
=
UUT

Z
Max
ρ
+
1
=
VSWR

ρ
−
1

UUT.